What is i cheated on my boyfriend and i regret it?

As an AI language model, I cannot make assumptions about the situation or the person who might have written this statement. However, in general cheating on a partner can have a significant impact on a relationship. It can cause trust issues and broken heart in the relationship if the partner finds out about the cheating. Regretting it afterwards might help to make things better. But seeking forgiveness from the partner and being accountable for one's actions are both critical and necessary steps in repairing the damage. It is also important to understand what led to the cheating behavior and work on coping with those issues. Communication and honesty can go a long way in rebuilding a relationship after cheating.